Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
DISCA
1226
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $32K | ﹤0.01% |
1,269
-4,995
| -80% | -$126K |
|
1227
Abeona Therapeutics
ABEO
$344M
| $31K | ﹤0.01% |
197
+193
| +4,825% | +$30.4K |
|
1228
St. Joe Company
JOE
$3B
| $31K | ﹤0.01% |
1,658
-304
| -15% | -$5.68K |
|
1229
News Corp Class A
NWSA
$16.5B
| $31K | ﹤0.01% |
+2,279
| New | +$31K |
|
1230
Quanex
NX
$673M
| $31K | ﹤0.01% |
+1,502
| New | +$31K |
|
1231
Paylocity
PCTY
$9.43B
| $31K | ﹤0.01% |
+708
| New | +$31K |
|
1232
Sally Beauty Holdings
SBH
$1.49B
| $31K | ﹤0.01% |
+1,536
| New | +$31K |
|
1233
Verint Systems
VRNT
$1.23B
| $31K | ﹤0.01% |
1,537
-23,953
| -94% | -$483K |
|
1234
Westlake Chemical Partners
WLKP
$763M
| $31K | ﹤0.01% |
1,253
+552
| +79% | +$13.7K |
|
|
NVRO
1235
DELISTED
NEVRO CORP.
NVRO
| $31K | ﹤0.01% |
428
-4,517
| -91% | -$327K |
|
|
XOG
1236
DELISTED
Extraction Oil & Gas, Inc. Common Stock
XOG
| $31K | ﹤0.01% |
2,350
+2,262
| +2,570% | +$29.8K |
|
|
GNMK
1237
DELISTED
GenMark Diagnostics, Inc
GNMK
| $31K | ﹤0.01% |
2,622
+490
| +23% | +$5.79K |
|
|
CBL
1238
DELISTED
CBL& Associates Properties, Inc.
CBL
| $31K | ﹤0.01% |
3,759
-1,370
| -27% | -$11.3K |
|
|
PKD
1239
DELISTED
Parker Drilling Company
PKD
| $31K | ﹤0.01% |
+1,549
| New | +$31K |
|
|
PNRA
1240
DELISTED
Panera Bread Co
PNRA
| $31K | ﹤0.01% |
100
-6,000
| -98% | -$1.86M |
|
|
DDC
1241
DELISTED
Dominion Diamond Corporation
DDC
| $31K | ﹤0.01% |
2,477
-27,642
| -92% | -$346K |
|
1242
POSCO
PKX
$15.4B
| $30K | ﹤0.01% |
494
+106
| +27% | +$6.44K |
|
1243
uniQure
QURE
$922M
| $30K | ﹤0.01% |
4,918
+4,456
| +965% | +$27.2K |
|
1244
Uranium Energy
UEC
$5.29B
| $30K | ﹤0.01% |
19,042
+193
| +1% | +$304 |
|
1245
American Woodmark
AMWD
$983M
| $30K | ﹤0.01% |
318
-1,240
| -80% | -$117K |
|
1246
American Vanguard Corp
AVD
$159M
| $30K | ﹤0.01% |
1,790
-14,873
| -89% | -$249K |
|
1247
Becton Dickinson
BDX
$53.7B
| $30K | ﹤0.01% |
+160
| New | +$30K |
|
1248
Elevance Health
ELV
$70.7B
| $30K | ﹤0.01% |
162
-174
| -52% | -$32.2K |
|
1249
HealthEquity
HQY
$7.93B
| $30K | ﹤0.01% |
+608
| New | +$30K |
|
1250
Kinross Gold
KGC
$28.4B
| $30K | ﹤0.01% |
+7,386
| New | +$30K |
|